from tkinter import * 
print('Введите начальную координату X:') 
X = int(input()) 
print('Введите начальную координату Y:') 
Y = int(input()) 
print('Введите коэффициент увеличения N:') 
N = int(input()) 
coords = [0, 0, 10, 0, 10, 10, 20, 10, 20, 0, 30, 0, 30, 20, 0, 20]
if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500: 
    pass 
else: 
    if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500: 
        pass 
    else: 
        if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500: 
            pass 
        else: 
            print('Размер фигуры превышает максимальный размер поля') 
            exit() 
root = Tk() 
root.title("ИТ марафон") 
root.geometry("500x500") 
canvas = Canvas(bg="white", width=500, height=500) 
canvas.pack(anchor=CENTER, expand=1) 
canvas.create_polygon(coords[0] *N+X, coords[1] *N+Y, 
                      coords[2] *N+X, coords[3] *N+Y, 
                      coords[4] *N+X, coords[5] *N+Y, 
                      coords[6] *N+X, coords[7] *N+Y, 
                      coords[8] *N+X, coords[9] *N+Y, 
                      coords[10]*N+X, coords[11]*N+Y,
                      coords[12]*N+X, coords[13]*N+Y,
                      coords[14]*N+X, coords[15]*N+Y) 
root.mainloop()
